Better diagnostic for shadowed function?

[NightStrike via Gcc-help <gcc-help@xxxxxxxxxxx>]

I recently hit this problem:

#include <strings.h>
void f() {
    index[0] = 0;
}

#gcc is 11.2.0
gcc -c a.c
a.c:4:7: error: subscripted value is neither array nor pointer nor vector
    4 |  index[1] = 0;
      |       ^

-Wshadow (or all or extra) did not highlight that "index" was actually
a function from strings.h.  For the future, is there anything I could
have done to make gcc tell me what the real error was?